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From "Arun Suresh (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-11482) Clients that cache instances of KMSClientProvider fail Authentication when "addDelegationTokens()" method is called after authentication token validity expires
Date Thu, 15 Jan 2015 07:59:34 GMT
Arun Suresh created HADOOP-11482:
------------------------------------

             Summary: Clients that cache instances of KMSClientProvider fail Authentication
when "addDelegationTokens()" method is called after authentication token validity expires

                 Key: HADOOP-11482
                 URL: https://issues.apache.org/jira/browse/HADOOP-11482
             Project: Hadoop Common
          Issue Type: Bug
    Affects Versions: 2.5.0
            Reporter: Arun Suresh
            Assignee: Arun Suresh


Long Living clients of HDFS (For eg. OOZIE) use cached DFSClients which in turn use a cached
KMSClientProvider to talk to KMS.

Before an MR Job is run, the job client calls the {{DFClient.addDelegationTokens()}} method
which calls {{addDelegationTokens()}} on the {{KMSClientProvider}} to get any delegation token
associated to the user.

Unfortunately, this call uses a cached {{DelegationTokenAuthenticationURL.Token}} instance
which can cause the {{SignerSecretProvider}} implementation of the {{AuthenticationFilter}}
at the KMS Server end to fail validation. Which results in the MR job itself failing.



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